There are
2,196 mi
from Middletown, OH to San Clemente, CA
That's the driving distance. It would take 1 day 14 hours to go from Middletown, Ohio to San Clemente, California.
The flight distance (direct flight from Middletown, OH to San Clemente, CA) is 1,881.41 mi.
2,196 mi = 3,533.66 kms